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Details for Patent: 4,938,763

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Summary for Patent: 4,938,763

Title: Biodegradable in-situ forming implants and methods of producing the same
Abstract:A biodegradable polymer is provided for use in providing syringeable, in-situ forming, solid biodegradable implants for animals. The polymer is placed into the animal in liquid form and cures to form the implant in-situ. A thermoplastic system to form said implant comprises the steps of dissolving a non-reactive polymer in biocompatible solvent to form a liquid, placing the liquid within the animal, and allowing the solvent to dissipate to produce the implant. An alternative, thermosetting system comprises mixing together effective amounts of a liquid acrylic ester terminated, biodegradable prepolymer and a curing agent, placing the liquid mixture within an animal and allowing the prepolymer to cure to form the implant. Both systems provide a syringeable, solid biodegradable delivery system by the addition of an effective level of biologically active agent to the liquid before injection into the body.
Inventor(s): Dunn; Richard L. (Fort Collins, CO), English; James P. (Birmingham, AL), Cowsar; Donald R. (Birmingham, AL), Vanderbilt; David P. (Birmingham, AL)
Application Number:07/252,645
Patent Claim Types:
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Use; Device; Delivery;

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International Patent Family for Patent: 4,938,763

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office0560014<disabled in preview>
European Patent Office0773034<disabled in preview>
European Patent Office0537559<disabled in preview>
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
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